<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>

    <!-- 准备好一个容器 -->
    <div id="test"></div>

      <!-- 引入react核心库 -->
      <script src="../js/react.development.js"></script>
      <!-- 引入react-dom，用于支持 react操作dom-->
      <script src="../js/react-dom.development.js"></script>
      <!-- 引入babel，用于将jsx转为 js-->
      <script src="../js/babel.min.js"></script>

      <script type="text/babel">
        // 1.创建组件
        class Demo extends React.Component{
            render(){
                return(
                    <div>
                        <input  ref="input1" type="text" placeholder="点击按钮提示数据"/> &nbsp;
                        <button    onClick={this.showData}>点我提示左侧数据</button> &nbsp;
                        <input ref="input2" onBlur={this.showData2}  type="text"  placeholder="失去焦点提示数据" />
                    </div>
                )
            }
            // 展示左侧输入框的数据
            showData = ()=>{
                // 函数体
               console.log(this);
               const {input1} =this.refs;
               alert(input1.value);
            }
            // 展示右侧输入框的数据
            showData2 = ()=>{
                const {input2} = this.refs;
                alert(input2.value);
            }
        }
        // 2.渲染组件到页面
        ReactDOM.render(<Demo/>,document.getElementById('test'));
      </script>
</body>
</html>